

package com.hazelcast.jet.impl.connector;

import com.hazelcast.function.FunctionEx;
import com.hazelcast.jet.core.AbstractProcessor;
import com.hazelcast.jet.core.Watermark;
import com.hazelcast.jet.core.processor.DiagnosticProcessors;

import javax.annotation.Nonnull;
import java.util.function.Function;

/**
 * See {@link DiagnosticProcessors#writeLoggerP(FunctionEx)}.
 */
public class WriteLoggerP<T> extends AbstractProcessor {

    private final Function<T, ? extends CharSequence> toStringFn;

    public WriteLoggerP(Function<T, ? extends CharSequence> toStringFn) {
        this.toStringFn = toStringFn;
    }

    @Override
    public boolean isCooperative() {
        return false;
    }

    @Override
    @SuppressWarnings("unchecked")
    protected boolean tryProcess(int ordinal, @Nonnull Object item) {
        getLogger().info(toStringFn.apply((T) item).toString());
        return true;
    }

    @Override
    public boolean tryProcessWatermark(@Nonnull Watermark watermark) {
        getLogger().fine(watermark.toString());
        return true;
    }
}
